Well driller cleanout pump assembly



ENSEN ATT'YS INVENTORS. ARNOLDsQQrBERG HL ANN CHR 34 M,

A. S. SOBERG ET AL WELL DRILLER CLEANOUT PUMP ASSEMBLY Filed Nov. 30, 1951 I May 19, 1953 III? III

Patented May 19, 1953 WELL DRILLER CLEANOUT PUMP ASSEMBLY Arnold S. Soberg, Elmhurst, and Ahlmann Chris- I tensen, Wilmette, 111., assignors to Sochris Development Company, Chicago, 111., a corporation of Illinois Application November 30', 1951, Serial No. 259,124

15 Claims.

This invention is directed to new and useful improvements in Well Drillers Cleanout Pump Assembly wherein a pumping mechanism is positioned and removably secured in a well casing at the desired depth and the pump operated to move water from the casing.

' The primary object of this invention is to provide a portable, sturdy, inexpensive pump mechanism with means whereby it can be lowered into a well casing and secured and sealed to the casing so that the first dirty liquid may be pumped to clean out the well before the more expensive permanent pumping means is installed.

Another object of this invention is to provide in such a mechanism a securing and sealing means adapted to operate simultaneously to either seal and secure the pump in a casing or unseal and release it by control above the ground in. which the well casing is sunk.

Still another object of this invention is to provide in such an assembly a sucker rod which not only operates the pump piston but is used as a means by which the assembly is suspended when lowered into the casing and as control lever for effecting the securing and sealing action and release.

A further object of this invention is to provide a pump assembly which is adapted to be lowered into a well casing by a conventional well drillers rig, secured in pumping position at any desired depth and operated by the oscillating movement of the well drillers rig cable to pump a liquid from the well.

And another object of this invention is to provide in such an assembly a control sleeve riding on the pump piston which will control the means for sealing the pump against the side of the casing.

Other objects and advantages will be apparent from the following detailed specifications:

In the drawings Fig. 1 is a schematic view partly in perspective and partly in enlarged sectionof a pump assembly embodying this invention secured in the lower part of a well casing and operable by the conventional well drillers rig.

1 Fig. 2 is an enlarged sectional view of the pump assembly shown in the lowerpart of Fig. 1 in suspended position before being secured and sealed within the casing. 7 V

Fig. 3 is a view similar to Fig. 2 but showing the pump assembly in secured and sealed position.

Fig. 4 is an alternate form of securing and sealmsmeans.

In detail, I is a well casing and 2 indicates the conventional well drillers rig whereby the cable 3' may beoscillated up and down and loweredor raised as desired. The pump cylinder 4 has the usual irreversible inlet valve 5 at its'bottom and the upper end is threaded internally as at 6. The usual pump piston I is provided with the usual irreversible inlet valve 8 and is secured to the lower end of the shaft 9 the upper end of which is provided with threads ID to receive the cable socket ll secured to the end of cable 3. A sleeve l2 fits loosely around shaft 9 and rests upon the upper surface of piston l.

Threaded to the upper threads 6 of cylinder 4 is a support [3 on which a hollow sealing cup I4 is tiltably supported. Springs I5 normally hold cup M in horizontal or sealing position. A hollow'slide block I6 is positioned around shaft 9 above cup [4 and a hollow wedge member I1 is positioned above it with shaft 9 extending therethrough. A pair of spaced arms 18 extend upwardly from block It at either side of rod 9 and. hollow wedge member I! is pivotally secured thereto at 22. These arms [8 also act as guides for slide block l6.

s A connecting link I9 is pivotally joined to slide block l6 and wedge member ll. One edge of wedge I! has teeth 20 and the opposite edge is rounded smooth as shown at 2|. The distances between the pivot point 22 and lower left and upper right corners are greater than the corresponding distances to the other corners.

A spring 23 surrounds shaft 9 between the lower end of block l6 and an upper stop 2s. A chain 25 connects the slide block It with one side of sealing cup [4.

In operation, cylinder 4 and attached assembly is secured to cable 3 by means of cable socket II and threads Ill. The weight of the assembly will be carried by piston I through sleeve l2. The upper end of sleeve I2 will bear against lower surface of slide block [8 and will thus raise slide block Hi to position shown in Fig. 2. This in turn, through link ill, will cause wedge IT to pivot and, through chain 25, will cause sealing "cup 14 to tilt to the position shown in Fig. 2. In this position the whole assembly may be lowered into casing l to about the desired depth. At this point the assembly is allowed to drop a short distance. This dropping will momentarily relieve "piston 1 from supporting the assembly and will 3 spectively. The wedge l'l will then grip casin l and the assembly becomes supported by wedge lland cup M efliects a seal across the casing. As the piston I no longer supports the assembly it falls to position shown in Fig. 3 with sleeve i2 spaced below block it." In this penetrate-ton 1 may be o'siiillatd by able 3 tb piiihp liquid" through valve 5 into cylinder l on the upstroke and through valve 3 above piston l on the down-" stroke. As this action continues litiiiid is iiiiivd lly up and out of easing i.

To release the assembly for removal from the casing, the cable 3 is moved upwardbeyondthe upper end of the normal pumpingqstroke' so that I sleeve l2 again contacts block It. a jerk of the cable will move block 16 upwardly to return wedge I? and seal M to their-testes: tive positions shown in Fig. 2. The whole as sembly may then be lifted out of the casing.

An alternate form of securing; andsealing 20 means is shown in F ig. i. In this the Wedge ie foi' i neel 61" ailahhfdjibrtlbi'l 26 held by a support :21 eiitenti iiig upwardwnbm the ti of bylihtier 23.: Parallel links eitend 6h both sides of shaft t and are pivoted to psi-n t 2i; and 25 are else pivdteuy connected it) seemed hornet as. An adjust-awe ste erew units the downward movement at enema.

The sealing eups'z fits "on cylinder it ut mar be tipped out of sealing positfih by trigger 3330 which extends downwardly an er-tuna shaft Q. A sleeve 3 htsaround the shaft't and rides on the piston in the same manner as sleeve 12 Figs. 2 and 3. A S Di'lii tilae t held 32 in sealing position. 35

In operation the pump ass'eihbly'fi's see-urea 'to the cable as above describe "and lb'wered into Casiitig 'l. The 'sle'v 3 1W Vi11 bar'a'gaifiet'th lower part of trigger 33 to ihdve it upwardly to tilt sealing cup 32' out of horizontal sealing e si- 40 above the ten. Th'enjapullupward win 'rel'ease the wedge assembly '26 2'9 ah' 'd'til' It should be 'iinderstoo'd that "the assembly may be lowered in the liqi'ii'd without the'securing' means being actuated? Howeveryvvhe'n tlfe' 'as= sembly is dropped while in the liquid the"resist-' anc'e oft-he liqu'icl'will'cau'se the w en to "swing toward horizontal totaus'e paits "lt' and' t'tf'to efiectively grasp "the inner'sidesofthe easing l.

Adjusting scr'ewtil permits thedi'stance be-'-' tween'p'orti'ons 2t and 31 to be varied to 'a'ecoinmod'ate slight variances iii the inner diameters of wen casings.

ween-1m:

1. In 'a well en ers cieaneqtgeefhp seamencomprising 'a cylinder, 'pi'st'dn and shaft, a means for securing nu sealing the same within amen casing at a point remote from the ground level comprising 'a pivoted wedge an'd 'a tiltable seal:

to the eyu aei, a trigger-actuated by "the. pump piston shaft when l'if'te'd iipwar'dl'y iabcve its normal uppe'r stroke to t" t the-s'eal'ingeup'and piv'ot the wedge out or operative positions and means for returning the wedge to s'eeuri'ng position and At this point 15 4 the cup to sealing position when the piston is in normal pumping positions.

2. A device in accordance with claim 1 in which the piston shaft extends upwardly through the assembly and is provided with securing means at its upper endw'ftir' fasteningto a cable whereby the assembly may be lowered in the easing, secured, pumped and removed therefrom.

A well drillers cleanout pump assembly comprising a pump cylinder, a piston therein, a piston shaft secured to the piston, a sealing cup tiltably positioned at the top of the cylinder, a securinglwed ge.rotatably positioned thereabove, a slide block therebetween, said piston shaft extending therethrough and above the wedge, means operably connecting the slide block with the wedge and thefiup, an abutment on the piston-shaft and positioned to contact the block when the piston is moved above its normal upper stroke position torotate the wedge out of holding position and the cup out of sealing position, means urgihg their return irom said positions anda fastening means at the upper end of the shaft for securing 'it to a cable whereby the assembly may be lowered into a "Well casing, s'ecured and sealed therein and the piston moved up and down to pump liquid.

4. In a pump assembly compris'ing the usual pump cylinder, piston and shaft adapted to be lowered into a well casing by cable'be removably secured therein and operated'by the cable to pump liquid from the casingfth'e' invention comprising a tiltable sealing ,cu'p'mounted on the cylinder; a tiltable' 'wedgg'supported from the cylinder, the piston" shaft "extending above the assembly, securing means at the upper end ofthe sha'ftfmea'nis ca'rrie'd by the shaft'f'or'causing the cup and wedge to 'inove'out ofop'erative "positions" when the shafttup'ports the asseinbl'y byfits' upper endand means urging the "cup'andwve'dge int'oolieiative posit ons Whenthe Weightof' the assembly is removed from"the sh'atti 5. In an assembly aceordin'g'tb' claim 4, as'lide' blo'ck'positioned between thewedge and oup ,"'a

link pivotall'y connecting the wedge an'dthe block and a chain connecting the block and the cup sai'ol meen' carrieupy'the shah adapted-to move the bloek whenthe "assembly is supported b'ythe shaft to move the wedge and cup outof-op'erative' positions.

6. A-wefll drillers eleanout pump assembly com-- wedgeandbecured to the cable, me'ansbarried' by the shaft for moving the seal and wedge into inoperative position when the pump is suspended from the cable; =1'neans which will move the seal and wedge-into operative positions when the Weight or the pump-is removed fre'm'thecable tosecure-the pump tb the casing and effect a seal F across thecasingbetween it and the pump and means tormevi-hgthe cable up anddoW-n'to effect a pumping action of the piston within the pump.

"7. In "a well drillers 'cle'anoutpump assembly comprising a and means for removably" seeu ringahdsealing the same with-in a well in sealing position, a trigger for moving it out unseat-rig petition; enenension of the pump "shaft passing through the seal, means for-sue pending the assembly from the upper end of said shaft extension, a shoulder carried by the pump shaft for actuating said trigger when the assembly is suspended by the shaft, and a pivotable wedge carried by the assembly in nonsecuring position when the assembly is supported by the shaft but movable to securing position when the seal is moved to sealing position, both seal and wedge releasable when the shaft is moved upwardly above its normal pumping positions.

8. A device according to claim '7 in which a sleeve carried by the pump piston is the shoulder for causing the seal to be tilted out of sealing position.

9. A device according to claim 7 in which the securing wedge is held by gravity out of securing position but may be moved to gripping position when the device is suspended in liquid by the pressure thereof when the assembly is rapidly passed therethrough.

10. A device according to claim 7 in which the wedge comprises an anchored side, a movable side and pivoted arms connecting them.

11. A device according to claim 7, in which the wedge comprises an anchored side, a movable side, arms pivotally connecting them and an adjusting screw supporting a movable part of the wedge assembly to vary and limit the distance between the anchored and movable side portions.

12. A well drillers cleanout pump assembly for use in a well casing comprising a cylinder, an inlet valve at the bottom thereof, a piston therein, an inlet valve in the piston, a shaft connected to the piston and extending above the cylinder to form a supporting shaft, a connecting head at the upper end of the shaft, a tiltable sealing cup mounted on the cylinder for creating a seal across the well casing, means urging the cup into sealing position, means carried by the shaft for causing the cup to be tilted out of sealing position when the shaft is above its normal upper pumping position and supporting the assembly by its connecting head, a pivoted wedge carried by the cylinder above the sealing cup and movable by manipulation of the supporting shaft into gripping engagement with the casing to support the assembly as the cup moves into sealing position, said seal and wedge movable out of sealing and securing positions respectively by an upward pull on the shaft when above its normal pumping positions.

13. A device according to claim 12 in which the wedge is weighted to normally assume nonsecuring position but movable to securing position by liquid pressure when the assembly is lowered rapidly through liquid.

14. A device according to claim 12 in which the wedge is mechanically linked with the seal to move out of securing position when the seal is tilted and spring means urging its return to securing position.

15. A well drillers cleanout pump assembly for use in a well casing comprising a cylinder, an inlet valve at the bottom thereof, a piston therein, an inlet valve in the piston, a shaft connected to the piston and extending above the cylinder to form a supporting shaft, a connecting head at the upper end of the shaft, a tiltable sealing cup mounted on the cylinder for creating a seal across the well casing, means urging the cup into sealing position, and means carried by the shaft for causing the cup to assume non-sealing position when the shaft is above its upper pumping stroke position.

ARNOLD S. SOBERG. AI-ILMAN'N CHRISTENSEN.

References Cited in the file of this patent UNITED STATES PATENTS Number 

